홈 데이터 컨버터 아날로그-디지털 컨버터(ADC) 정밀 ADC
홈
데이터 컨버터
아날로그-디지털 컨버터(ADC)
정밀 ADC
신규

ADS8688W

활성

±12V 차동 입력을 지원하는 16비트, 500kSPS, 8채널, 단일 전원 SAR ADC

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데이터 시트

ADS8688W

활성
데이터 시트 지금 주문하기

제품 상세 정보

Resolution (Bits) 16 Sample rate (max) (ksps) 500 Number of input channels 8 Interface type SPI Architecture SAR Input type Differential, Single-ended Multichannel configuration Multiplexed Rating Catalog Reference mode External, Internal Input voltage range (max) (V) 10.24 Input voltage range (min) (V) -10.24 Features Daisy-Chainable, Oscillator, Over-Voltage Protection, PGA Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 65 Analog supply voltage (min) (V) 4.75 Analog supply voltage (max) (V) 5.25 SNR (dB) 85 Digital supply (min) (V) 1.65 Digital supply (max) (V) 5.25
Resolution (Bits) 16 Sample rate (max) (ksps) 500 Number of input channels 8 Interface type SPI Architecture SAR Input type Differential, Single-ended Multichannel configuration Multiplexed Rating Catalog Reference mode External, Internal Input voltage range (max) (V) 10.24 Input voltage range (min) (V) -10.24 Features Daisy-Chainable, Oscillator, Over-Voltage Protection, PGA Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 65 Analog supply voltage (min) (V) 4.75 Analog supply voltage (max) (V) 5.25 SNR (dB) 85 Digital supply (min) (V) 1.65 Digital supply (max) (V) 5.25
— (—) — See data sheet
  • 16-Bit ADCs with Integrated Analog Front-End
  • 4-, 8-Channel MUX with Auto and Manual Scan
  • Channel-Independent Programmable Inputs:
    • ±12.288V, ±6.144V, and ±3.072V
    • 12.288V to 0V and 6.144V to 0V
  • 5V Analog Supply: 1.65V to 5V I/O Supply
  • Constant Resistive Input Impedance: 1.2MΩ
  • Input Overvoltage Protection: Up to ±20V
  • On-Chip, 4.096V Reference with Low Drift
  • Excellent Performance:
    • 500kSPS Aggregate Throughput
    • DNL: ±0.6LSB; INL: ±0.8LSB
    • Low Drift for Gain Error and Offset
    • SNR: 91.5dB; THD: –102dB
    • Low Power: 65mW
  • AUX Input → Direct Connection to ADC Inputs
  • ALARM → High and Low Thresholds per Channel
  • SPI™-Compatible Interface with Daisy-Chain
  • Industrial Temperature Range: –40°C to 125°C
  • 16-Bit ADCs with Integrated Analog Front-End
  • 4-, 8-Channel MUX with Auto and Manual Scan
  • Channel-Independent Programmable Inputs:
    • ±12.288V, ±6.144V, and ±3.072V
    • 12.288V to 0V and 6.144V to 0V
  • 5V Analog Supply: 1.65V to 5V I/O Supply
  • Constant Resistive Input Impedance: 1.2MΩ
  • Input Overvoltage Protection: Up to ±20V
  • On-Chip, 4.096V Reference with Low Drift
  • Excellent Performance:
    • 500kSPS Aggregate Throughput
    • DNL: ±0.6LSB; INL: ±0.8LSB
    • Low Drift for Gain Error and Offset
    • SNR: 91.5dB; THD: –102dB
    • Low Power: 65mW
  • AUX Input → Direct Connection to ADC Inputs
  • ALARM → High and Low Thresholds per Channel
  • SPI™-Compatible Interface with Daisy-Chain
  • Industrial Temperature Range: –40°C to 125°C

The ADS8684W and ADS8688W are 4-channel and 8-channel, integrated data acquisition systems based on a 16-bit successive approximation (SAR) analog-to-digital converter (ADC), operating at a throughput of 500kSPS. The devices feature integrated analog front-end circuitry for each input channel with overvoltage protection up to ±20V, a 4-channel or 8-channel multiplexer with automatic and manual scanning modes, and an on-chip, 4.096V reference with low temperature drift. Operating on a single 5V analog supply, each input channel on the devices can independently support bipolar input ranges of ±12.288V, ±6.144V, and ±3.072V and unipolar input ranges of 12.288V to 0V and 6.144V to 0V.

The ADS8684W and ADS8688W offer a simple SPI-compatible serial interface to the digital host and also support daisy-chaining of multiple devices. The digital supply operates from 1.65V to 5.25V, enabling direct interface to a wide range of host controllers.

The ADS8684W and ADS8688W are 4-channel and 8-channel, integrated data acquisition systems based on a 16-bit successive approximation (SAR) analog-to-digital converter (ADC), operating at a throughput of 500kSPS. The devices feature integrated analog front-end circuitry for each input channel with overvoltage protection up to ±20V, a 4-channel or 8-channel multiplexer with automatic and manual scanning modes, and an on-chip, 4.096V reference with low temperature drift. Operating on a single 5V analog supply, each input channel on the devices can independently support bipolar input ranges of ±12.288V, ±6.144V, and ±3.072V and unipolar input ranges of 12.288V to 0V and 6.144V to 0V.

The ADS8684W and ADS8688W offer a simple SPI-compatible serial interface to the digital host and also support daisy-chaining of multiple devices. The digital supply operates from 1.65V to 5.25V, enabling direct interface to a wide range of host controllers.
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기술 자료

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18개 모두 보기
상위 문서 유형 직함 형식 옵션 날짜
* Data sheet ADS868xW 16 -Bit, 500 kSPS, 4- and 8-Channel, Single-Supply, SAR ADCs With Bipolar Input Ranges datasheet PDF | HTML 2025/12/03
EVM User's guide ADS8688W BoosterPack Evaluation Module PDF | HTML 2026/02/24
Circuit design High common-mode differential input voltage to ±10-V ADC input circuit (Rev. A) PDF | HTML 2024/09/24
Circuit design Reducing effects of external RC filter circuit on gain and drift error (Rev. B) PDF | HTML 2024/09/19
Circuit design Circuit to increase input range on an integrated analog front end (AFE) SAR ADC (Rev. B) PDF | HTML 2024/09/12
Circuit design Input Protection for High-Voltage ADC Circuit with TVS Diode (Rev. A) PDF | HTML 2023/05/02
Product overview PLC Analog Input Front-End Architectures PDF | HTML 2022/07/31
Application note EMC Compliance Testing for Precision ADC Systems (Rev. A) PDF | HTML 2022/05/27
Application note Circuit for detecting input floating on ADS8681 ADC PDF | HTML 2021/03/31
Application note Reducing Phase Delay by Averaging on ADS8686S with Burst Sequencer Mode PDF | HTML 2021/01/11
Circuit design Circuit for protecting ADC with TVS diode and PTC fuse 2020/08/03
Application note Extending Input Voltage Range and Understanding Associated Errors for ADC With I 2018/11/09
Technical article Improving sensor DAQ performance using the PRU-ICSS for grid protection and contro PDF | HTML 2018/10/09
Technical article Interfacing multiple ADCs to a single processor for grid protection and control PDF | HTML 2018/09/13
Technical article Analog interfacing for grid infrastructure with Sitara processors PDF | HTML 2018/02/15
White paper Voltage-reference impact on total harmonic distortion 2016/08/01
More literature SAR ADCs for PLC Applications 2016/02/11
User guide Phase-Compensated 8-Ch Multiplexed Data Acquisition System for Power Automation (Rev. B) 2015/03/12

설계 및 개발

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평가 보드

BOOSTXL-ADS8688W — ADS8688W BoosterPack™ plug-in module

The ADS8688W BoosterPack™ Plug-in Module (BOOSTXL-ADS8688W) provides a cost effective and accessible platform for developing applications using the ADS8688W. This module is compatible with the LP-MSPM0G3507 LaunchPad™ evaluation kit, and includes headers to support use with other controllers. (...)
사용 설명서: PDF | HTML
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ANALOG-ENGINEER-CALC — PC software analog engineer's calculator

The analog engineer’s calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting operational-amplifier (...)

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TI용 PSpice®는 아날로그 회로의 기능을 평가하는 데 사용되는 설계 및 시뮬레이션 환경입니다. 완전한 기능을 갖춘 이 설계 및 시뮬레이션 제품군은 Cadence®의 아날로그 분석 엔진을 사용합니다. 무료로 제공되는 TI용 PSpice에는 아날로그 및 전력 포트폴리오뿐 아니라 아날로그 행동 모델에 이르기까지 업계에서 가장 방대한 모델 라이브러리 중 하나가 포함되어 있습니다.

TI 설계 및 시뮬레이션 환경용 PSpice는 기본 제공 라이브러리를 이용해 복잡한 혼합 신호 설계를 시뮬레이션할 수 있습니다. 레이아웃 및 제작에 착수하기 (...)
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TINA-TI — SPICE 기반 아날로그 시뮬레이션 프로그램

TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
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